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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER – EXAMINATION – SUMMER-2015
Subject Name:- Manufacturing Engg.-III Date: 07/05/2014
Subject Code:- 3351903
Time: 2:30 pm to 5:00 pm Total Marks:- 70
Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable & Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
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Q.1 Answer any seven out of ten. 14
1 Define Speed & Feed with respect to Turning
2 What are the required conditions for good surface finish in Turning?
3 State the cutting tool angles with a sketch.
4 Explain the cutting action of Grinding Wheel.
5 List the types of Gear & state Application of each.
6 Define the simple Gear drive & compound Gear drive.
7 Define single start Thread & multiple start Thread with a sketch.
8 Define L.H thread and R.H thread with a sketch.
9 List the Application of Broaching Machine.
10 Draw a neat sketch of Broach tool.
Q.2 (a) Explain constituent of Grinding Wheel with a sketch. 03
OR
(a) State the Advantages of Grinding as a machining process. 03
(b) State the use of centre less Grinding 03
OR
(b) Define the Honing process & Lapping process. 03
(c) Explain Nomenclature of Grinding Wheel 04
OR
(c) State the important factors considered in the selection of Grinding Wheel 04
(d) Explain the Gear milling process with a sketch. 04
OR
(d) List the various methods of Gear manufacturing & explain any ONE 04
Q.3 (a) Differentiate Gear generating process & Gear forming process. 03
OR
(a) List the methods of Gear generating & explain any ONE 03
(b) List the different types of Thread with a sketch. 03
OR
(b) Show the various elements of thread in the sketch of “V” thread 03
(c) List the various methods of thread production& explain any ONE 04
OR
(c) State the factors affecting the selection of thread production process. 04
(d) Explain Thread milling process with a sketch. 04
OR
(d) Explain Thread rolling process with a sketch. 04
Q.4 (a) Classify the Machine-Tools. 03
OR
(a) List the Application of Jig Boring Machine. 03
(b) Explain the working principle of Jig Boring Machine 04
OR
(b) Differentiate between Standard machine-tools& Special purpose machinetool. 04
(c) Explain the Machine, Tools, & Machine-Tools. 07
Q.5 (a) Differentiate between Conventional & Non-Conventional machiningmethods 04
(b) Explain the working principle of Electro Discharge Machining (EDM) process 04
(c) Explain, Why Non-Conventional machining methods are used ? 03
(d) Classify the various Non-Conventional machining methods. 03
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